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基于非光滑结构的摩擦动接工具的摩擦性能研究
Yupeng Li1,2,3,4, Yu Huangfu2,3, Jiacheng Feng2,3
1Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
Biomimetics (Basel, Switzerland)
|July 26, 2024
概括
在摩擦接接工具上的仿生非光滑结构减少了磨损和粘附. 具有优化洞间距的工具显示显著降低磨损和提高对材料积聚的抵抗力.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 部落学 (tribology) 是一个学科.
背景情况:
- 摩擦接 (FSW) 是一种固态连接工艺,对各种行业至关重要.
- 工具磨损和材料粘附是FSW中的重大挑战,影响接质量和工具寿命.
- 生物设计原则为提高工具性能提供了潜在的解决方案.
研究的目的:
- 调查仿生非光滑形坑结构对FSW工具性能的影响.
- 分析坑间距和密度对热循环,下压力,扭矩和磨损的影响.
- 为了评估修改后的FSW工具的耐磨性和粘附性.
主要方法:
- 制造FSW工具,在肩膀上具有仿生非光滑的形孔洞结构.
- 使用改造工具和常规工具进行200米的试验接.
- 在接过程中测量热循环曲线,下压力和扭矩.
- 对工具肩表面形态和接后磨损减重的分析.
主要成果:
- 减少坑道距离和增加坑道数量导致下压力,扭矩和峰值温度降低.
- 增加接速度降低了下压力和扭矩,但增加了峰值温度.
- 非光滑结构的工具显著减少了磨损损失,在1.125毫米的坑间隔内减少了27%.
- 随着坑洞密度的增加,轮的粘合力下降,在坑洞距离1.125毫米时的粘合力最小.
结论:
- 生物模拟非光滑的形坑结构增强FSW工具的耐磨性.
- 这些结构还提高了粘附阻力,减少了在工具肩上的积累.
- 优化的生物设计为延长工具寿命和提高FSW效率提供了有希望的方法.
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